SOURCE: I have a 2003 harley
It sounds like your float level is just a bit high in the carburetor. Your bike is equipped with a vacuum operated petcock. When the engine is not running, there is no vacuum on the intake and therefore, not vacuum on the petcock. When there is no vacuum on the petcock, the fuel is turned off.
When you start the engine, vacuum is created and applied to the petcock turning on the fuel. If the float level is set too high or you have a piece of trash in the needle and seat in the carb, the float bowl will overfill and gasoline will run out of the overflow hose.
You need to take the carb off the engine, remove the float bowl, take the float and the needle out and clean out the needle and seat. Then check the float height. Now, this is an area where you need a manual. The float sets with the carb on a 15° to 20°angle. With it on this angle, you set the height to 0.413-0.453" from the carburetor flange surface to the top of the float. I usually try to set the float at the lowest fuel level setting with would be the 0.453" setting.
Good Luck
Steve
check the oil level and make sure its not over full. the hose with the mini filter is a crankcase breather, if there is too much oil, it could cause oil to flow out the breather. It is possible that the rings are worn or broken causing blow by or extra crank case pressure. The hard shifting is usually caused by a dragging clutch or the clutch being out of adjustment.
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